#include "../source/http/http.hpp"
#include <sys/stat.h>



static std::string UrlEncode(const std::string url, bool convert_space_to_plus){
    std::string res;
    for(auto &c : url){
        // std::cout << isalnum(c) << std::endl;
        if(c == '.' || c == '-' || c == '_' || c == '~' || isalnum(c)){
            res += c;
            continue;
        }
        if(c == ' ' && convert_space_to_plus == true){
            res += '+';
            continue;
        }
        //剩下的字符都是需要编码为%HH格式
        char tmp[4] = {0};
        sprintf(tmp, "%%%02X", c);
        res += tmp;
    }
    return res;
}

static char HEXTOI(char c){
    if(c >= '0' && c <= '9'){
        return c - '0';
    }else if(c >= 'a' && c <= 'z'){
        return c - 'a' + 10;
    }else if(c >= 'A' && c <= 'Z'){
        return c - 'A' + 10;
    }
    return -1;
}

static std::string UrlDecode(const std::string url, bool convert_space_to_plus){
    //遇到了%，则将紧随其后的2个字符转换成数字，第一个数字左移4位，然后加上第二个数字 + -> 2b
    std::string res;
    for(int i = 0; i < url.size(); i++){
        if(url[i] == '+' && convert_space_to_plus == true){
            res += ' ';
            continue;
        }
        if(url[i] == '%' && (i + 2) < url.size()){
            char v1 = HEXTOI(url[i + 1]);
            char v2 = HEXTOI(url[i + 2]);
            char v = v1 * 16 + v2;
            res += v;
            i += 2;
            continue;
        }
        res += url[i];
    }
    return res;
}

static std::string StatuDesc(int statu){
    std::unordered_map<int, std::string> _statu_mag = {
        {100, "Continue"},
        {101, "Switching Protocol"},
        {102, "Processing"},
        {103, "Early Hints"},
        {200, "OK"},
        {201, "Created"},
        {202, "Accepted"},
        {203, "Non-Authoritative Information"},
        {204, "No Content"},
        {205, "Reset Content"},
        {206, "Partial Content"},
        {207, "Multi-Status"},
        {208, "Already Reported"},
        {226, "IM Used"},
        {300, "Multiple Choice"},
        {301, "Moved Permanently"},
        {302, "Found"},
        {303, "See Other"},
        {304, "Not Modified"},
        {305, "Use Proxy"},
        {306, "unused"},
        {307, "Temporary Redirect"},
        {308, "Permanent Redirect"},
        {400, "Bad Request"},
        {401, "Unauthorized"},
        {402, "Payment Required"},
        {403, "Forbidden"},
        {404, "Not Found"},
        {405, "Method Not Allowed"},
        {406, "Not Acceptable"},
        {407, "Proxy Authentication Required"},
        {408, "Request Timeout"},
        {409, "Conflict"},
        {410, "Gone"},
        {411, "Length Required"},
        {412, "Precondition Failed"},
        {413, "Payload Too Large"},
        {414, "URI Too Long"},
        {415, "Unsupported Media Type"},
        {416, "Range Not Satisfiable"},
        {417, "Expectation Failed"},
        {418, "I'm a teapot"},
        {421, "Misdirected Request"},
        {422, "Unprocessable Entity"},
        {423, "Locked"},
        {424, "Failed Dependency"},
        {425, "Too Early"},
        {426, "Upgrade Required"},
        {428, "Precondition Required"},
        {429, "Too Many Requests"},
        {431, "Request Header Fields Too Large"},
        {451, "Unavailable For Legal Reasons"},
        {501, "Not Implemented"},
        {502, "Bad Gateway"},
        {503, "Service Unavailable"},
        {504, "Gateway Timeout"},
        {505, "HTTP Version Not Supported"},
        {506, "Variant Also Negotiates"},
        {507, "Insufficient Storage"},
        {508, "Loop Detected"},
        {510, "Not Extended"},
        {511, "Network Authentication Required"}
    };
    auto it = _statu_mag.find(statu);
    if(it != _statu_mag.end()){
        return it->second;
    }
    return "Unknow";
}

static std::string ExtMime(const std::string &filename){
    std::unordered_map<std::string, std::string> _mime_msg = {
        {".aac", "audio/aac"},
        {".abw", "application/x-abiword"},
        {".arc", "application/x-freearc"},
        {".avi", "video/x-msvideo"},
        {".azw", "application/vnd.amazon.ebook"},
        {".bin", "application/octet-stream"},
        {".bmp", "image/bmp"},
        {".bz", "application/x-bzip"},
        {".bz2", "application/x-bzip2"},
        {".csh", "application/x-csh"},
        {".css", "text/css"},
        {".csv", "text/csv"},
        {".doc", "application/msword"},
        {".docx", "application/vnd.openxmlformatsofficedocument.wordprocessingml.document"},
        {".eot", "application/vnd.ms-fontobject"},
        {".epub", "application/epub+zip"},
        {".gif", "image/gif"},
        {".htm", "text/html"},
        {".html", "text/html"},
        {".ico", "image/vnd.microsoft.icon"},
        {".ics", "text/calendar"},
        {".jar", "application/java-archive"},
        {".jpeg", "image/jpeg"},
        {".jpg", "image/jpeg"},
        {".js", "text/javascript"},
        {".json", "application/json"},
        {".jsonld", "application/ld+json"},
        {".mid", "audio/midi"},
        {".midi", "audio/x-midi"},
        {".mjs", "text/javascript"},
        {".mp3", "audio/mpeg"},
        {".mpeg", "video/mpeg"},
        {".mpkg", "application/vnd.apple.installer+xml"},
        {".odp", "application/vnd.oasis.opendocument.presentation"},
        {".ods", "application/vnd.oasis.opendocument.spreadsheet"},
        {".odt", "application/vnd.oasis.opendocument.text"},
        {".oga", "audio/ogg"},
        {".ogv", "video/ogg"},
        {".ogx", "application/ogg"},
        {".otf", "font/otf"},
        {".png", "image/png"},
        {".pdf", "application/pdf"},
        {".ppt", "application/vnd.ms-powerpoint"},
        {".pptx", "application/vnd.openxmlformatsofficedocument.presentationml.presentation"},
        {".rar", "application/x-rar-compressed"},
        {".rtf", "application/rtf"},
        {".sh", "application/x-sh"},
        {".svg", "image/svg+xml"},
        {".swf", "application/x-shockwave-flash"},
        {".tar", "application/x-tar"},
        {".tif", "image/tiff"},
        {".tiff", "image/tiff"},
        {".ttf", "font/ttf"},
        {".txt", "text/plain"},
        {".vsd", "application/vnd.visio"},
        {".wav", "audio/wav"},
        {".weba", "audio/webm"},
        {".webm", "video/webm"},
        {".webp", "image/webp"},
        {".woff", "font/woff"},
        {".woff2", "font/woff2"},
        {".xhtml", "application/xhtml+xml"},
        {".xls", "application/vnd.ms-excel"},
        {".xlsx", "application/vnd.openxmlformatsofficedocument.spreadsheetml.sheet"},
        {".xml", "application/xml"},
        {".xul", "application/vnd.mozilla.xul+xml"},
        {".zip", "application/zip"},
        {".3gp", "video/3gpp"},
        {".3g2", "video/3gpp2"},
        {".7z", "application/x-7z-compressed"}
    };
    // a.b.txt  先获取文件扩展名
    size_t pos = filename.find_last_of('.');
    if(pos == std::string::npos){
        return "application/octet-stream";
    }
    //根据扩展名获取mime
    std::string ext = filename.substr(pos);
    auto it = _mime_msg.find(ext);
    if(it == _mime_msg.end()){
        return "application/octet-stream";
    }
    return it->second;
}

static bool IsDirectory(const std::string &filename){
    struct stat st;
    int ret = stat(filename.c_str(), &st);
    if(ret < 0){
        return false;
    }
    return S_ISDIR(st.st_mode);
}
//判断一个文件是否是一个普通文件
static bool IsRegular(const std::string &filename){
    struct stat st;
    int ret = stat(filename.c_str(), &st);
    if(ret < 0){
        return false;
    }
    return S_ISREG(st.st_mode);
}


static bool ValidPath(const std::string &path){
    //思想 ： 按照/进行路径分割，根据有多少子目录，计算目录深度，有多少层，深度不能小于0
    int level = 0;
    std::vector<std::string> subdir;
    Util::Split(path, "/", &subdir);
    for(auto &dir : subdir){
        std::cout << dir << std::endl;
    }
    for(auto &dir : subdir){
        if(dir == ".."){
            level--; //任意一层走出相对根目录就认为有问题
            if(level < 0){
                return false;
            }
            continue;
        }
        level++;
    }
    return true;
}

int main(){
    // std::string str = "C  ++";
    // std::string res = UrlEncode(str, false);
    // std::string tmp = UrlDecode(res, false);

    // std::cout << res << std::endl;
    // std::cout << tmp << std::endl;

    // std::cout << StatuDesc(404) << std::endl;
    // std::cout << StatuDesc(800) << std::endl;

    // std::cout << ExtMime("a.txt") << std::endl;
    // std::cout << ExtMime("a..b.txt") << std::endl;
    // std::cout << ExtMime("a..b.jpg") << std::endl;

    // std::cout << IsRegular("test1") << std::endl;
    // std::cout << IsRegular("regex.cpp") << std::endl;

    // std::cout << IsDirectory("test1") << std::endl;
    // std::cout << IsDirectory("regex.cpp") << std::endl;

    std::cout << ValidPath("html/../../index.cpp") << std::endl;

    return 0;
}